add more information about the *.dev.js file (see #28)
improve resource selection for high density devices
improve resource selection for different densities
improve documentation, faster abort/change of low quality source, added srcset, sizes idl properties
improve tests + refine idl setter/getter
fix test on 1dpr devices
add some h descriptor tests
improve resource selection
improve resource selection + demo
improve demo
improve resource selection
moved currentSrc implementation to plugins
improve testing for IE8 + reevaluate after loading intrinsic-size plugin.
fix tests